Dynamometer



C. NEER.

'Dynamometer and Register.

Patented July 121859..

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N. PETERS Phofu'Likhngnpher, Washmgtsm D. c.

UNITED STATES PATENT OFFICE,

CHARLES NEER, OF ALBANY, NEW YORK.

DYNAMOMETER.

Specification of Letters Patent No. 24,753, dated July 12, 1859.

To (LZZ whom it may concern:

Be it known that I, CHARLES NEER, of Albany, in the county of Albany andState of New York, have invented, made, and applied to use a certain newand useful Improvement in Dynamometers, which I term the RotaryDynamometer and Register; and I do hereby declare the following to be afull, clear, and exact description of the construction and operation ofthe same, reference being had to the annexed drawing, making part ofthis specification, wherein- Figure 1. is a plan of my said inventionand Fig. 2 is a side elevationof the same.

Similar marks of reference denote the same parts.

In manufactories, mills and other places one personwill hire a certainnumber of horses power from another person that runs a steam engine, orit is desired to know the number of horses power exerted in running acertain machine. In all these cases difficulty has heretofore existed inintroducing a dynamometer between the rotating prime mover and the lineshaft from which power is taken, so as to indicate the number of horsespower consumed on the average per day, or where the work varies greatlyas is the case in some shops to show the power that has been used perweek, month, or quarter.

My said invention is intended to accomplish the before mentioned object,and consists in an arrangement of mechanism by which the power made useof at any time may be determined by inspection, or the whole amount ofpower consumed in a day week month or longer period can be determined,so that the consumer may not be charged with power he does not use, orthe manufacturer furnish power for which he receives no pay.

In the drawing a, is a loose pulley on the line shaft Z), to whichpulley the power is applied by a belt, in any usual manner. This pulleyif not otherwise fitted, would revolve freely between the collar 6, andthe fixed cross arm 0, without turning the shaft 6. In order tocommunicate motion to this fixed cross arm 0, and the shaft Z), to whichit is attached, I provide rollers 2 2, or the ends of the said arms 0,and similar rollers (or their equivalents) 1, 1, on the drum, pulley, orwheel a, and between these rollers I introduce sections of a cylinder(Z, (Z, forming inclines or wedges, these are on the arms (Z, of acollar or hub that sur rounds the main shaft 6, and is free to slideendwise on said shaft or partially turn thereon. The rollers 1, 1, and2, 2, acting on opposite sides of the inclines (Z. (Z, tend to force thearms and hub (Z, endwise of the shaft a, and as the shaft a, receivesits rotation entirely from the arms a, through the rollers 1, 2, andintervening inclines (Z, (Z, the power exerted to rotate said shaft willbe proportioned to the force tending to keep the wedges or inclines (Z,(Z, up to the rollers compared with the inclination of said inclines (Z,(Z. For this purpose I apply any suitable spring or springs. I haverepresented a helical spring 3, around the shaft Z), with a collar at.taking its outer end. Around the hub (Z, is a groove taking a forked armf, from a slide 9, at one end of which is an index and pointer 5. Theparts and divisions of the index (5) being proportioned mathematicallyaccording to the inclines (Z, (Z, and the power of the spring, as willbe well understood by a competent person, the index 5, will indicate thenumber of horses power that is being applied to the shaft Z), from themotor If the collar 4, be set along so as to compress the spring alarger amount of power can be availed of without increasing the lengthof the inclines (Z, (Z. In this instance the index 6, denotes the horsespower (to which the apparatus is set) which must be exerted before theindex 5 commences to move, so that the sum of the indexes e and 5 willbe the power made use of.

In order to keep account of the actual power made use of I apply a cone71, on a. shaft 2', which shaft 2', is rotated by a band from 6, to thepulley 7 and said pulley 7 is fitted with a key or feather so as toallow the shaft 2' to be moved endwise by an arm 8, from the slide 9 toa grooved collar around this shaft 2'.

is is a roller on the end of the frame Z, that is fitted to rise andfall on the shaft on, as a center.

9 and 10 are pulleys connecting the shaft of roller 70, to the shaft m,to give motion to this latter shaft m.

11, is a worm on m, to a wheel 11, on the shaft 12, on which a wormpinion 13, gears to wheel 0, on the shaft 14, that carries a hand 9,revolving over the dial 7). The proportions of these parts and thedivisions of the dial are of any desired character as circumstances mayrequire, care being taken to make the calculations correctly so that ifthe index 5, denote say that ten horse power is being used uniformly forone day, the cone it, will give such motion to the roller is, andthrough the gearing to the hand 9, that the dial will in a day (of tenhours) indicate ten horses used; hence the cone will regulate theregister in the proper proportion and the total number of horse powerused in a given number of days will determine the average power used.

If the springs 3, be compressed by the collar 4, the difference of powermay be allowed for by the use of changeable pulleys or cones of pulleysat the pulleys 9, and 10, to make the registration perfect.

It will be evident that the same operation as before specified would beproduced if the rollers l and 2, were dispensed with, said rollers onlyacting to avoid friction; and if deemed more convenient the inclines (Z,(i, might be placed on a pulley instead of on the cross arms and hub(cZ,) and the spring 3, may be made and applied in any convenient mannerto regulate the extent of motion from the inclines in proportion to thepower exerted, the spring in all in stances becoming the measurer of thepower either directly or through the medium of shaft a, is denoted bythe motion resulting from the pressure against said yielding incline orinclines for the purpose of forming a rotary dynamometer substantiallyas specified.

2. I also claim the revolving and sliding cone h, adjusted in itsposition according to the power applied from the pulley a, to the shaft6, when combined with a registering apparatus substantially as setforth, to record the amount of power made use of as described.

/ I11 witness whereof I have hereunto set my signature this twenty firstday of May,

CHARLES NEER.

lVitnesses:

LEMUEL IV. SERRELL, Tnos. Gno. HAROLD.

